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Search: Posts Made By: rupej
Forum: LIVE PLC Questions And Answers January 20th, 2018, 11:56 PM
Replies: 47
Views: 1,433
Posted By rupej
Fair enough, but it's harder on a smart phone...

Fair enough, but it's harder on a smart phone when you don't want to quote the entire post, so you have to edit it to just the part you want. Touchscreens are not the best for word processing.
Forum: LIVE PLC Questions And Answers January 20th, 2018, 04:09 PM
Replies: 47
Views: 1,433
Posted By rupej
^ I agree. That's how I would approach this one.

^ I agree. That's how I would approach this one.
Forum: LIVE PLC Questions And Answers January 20th, 2018, 10:07 AM
Replies: 3
Views: 178
Posted By rupej
Not sure about the PLC itself, but don't AB and...

Not sure about the PLC itself, but don't AB and many others make IP66+ I/O modules? You would just use them as remote I/O for a PLC mounted in a clean and dry area.
Forum: LIVE PLC Questions And Answers January 18th, 2018, 06:37 PM
Replies: 47
Views: 1,433
Posted By rupej
^ I've done it numerous times in the food and...

^ I've done it numerous times in the food and beverage industry. Often it is a centrifugal pump "stuffing" a PD pump, such as the inlet of a barrel freezer. Other times, it is a PD pump stuffing...
Forum: LIVE PLC Questions And Answers January 18th, 2018, 02:41 PM
Replies: 47
Views: 1,433
Posted By rupej
^ This is an interesting discussion. Tom,...

^

This is an interesting discussion. Tom, normally I would agree with what you are saying, but in this case I think the best bet would be a separate pressure loop.

Reason being is that as the...
Forum: LIVE PLC Questions And Answers January 16th, 2018, 11:19 AM
Replies: 10
Views: 388
Posted By rupej
Yeah, sounds totally normal. :beerchug:

Yeah, sounds totally normal. :beerchug:
Forum: LIVE PLC Questions And Answers January 4th, 2018, 07:23 PM
Replies: 20
Views: 548
Posted By rupej
Which may explain why the code states something...

Which may explain why the code states something about being allowed to set overloads "not higher than 125% of FLA" under certain conditions. I don't have the book handy to check.

Thanks to...
Forum: LIVE PLC Questions And Answers January 3rd, 2018, 09:09 PM
Replies: 20
Views: 548
Posted By rupej
^ I agree, and what drives or overloads for that...

^ I agree, and what drives or overloads for that matter calculate the HP and trip based on that? None that I regularly use, so why not just go by FLA x SF?
Forum: LIVE PLC Questions And Answers January 3rd, 2018, 08:52 AM
Replies: 20
Views: 548
Posted By rupej
Motor Service Factor Question

I have a typical motor that can be wired for 230/460 but is also rated for 208VAC operation. It has a typical 1.15 service factor. If I wire this motor to a 208V feed, can I still set the overload...
Forum: LIVE PLC Questions And Answers December 27th, 2017, 07:00 PM
Replies: 19
Views: 607
Posted By rupej
A good budget idea is to put a general "alarm"...

A good budget idea is to put a general "alarm" light on the panel for situations that require operator interaction. You could then have the alarm reset when the switch position is changed to OFF. The...
Forum: LIVE PLC Questions And Answers December 25th, 2017, 01:37 PM
Replies: 3
Views: 222
Posted By rupej
Hello Ju, you just download the new version from...

Hello Ju, you just download the new version from ab.com and install it. Licensing can be tricky depending on how you're set up.
Forum: LIVE PLC Questions And Answers December 25th, 2017, 01:36 PM
Replies: 19
Views: 607
Posted By rupej
Welcome to the forum! RSLogix 5 is a good program...

Welcome to the forum! RSLogix 5 is a good program to learn on. Post your code so far and we can help you out with what you're having trouble with.
Forum: LIVE PLC Questions And Answers December 12th, 2017, 05:11 PM
Replies: 9
Views: 284
Posted By rupej
I've had the .msg extension added by outlook too-...

I've had the .msg extension added by outlook too- never did figure it out! Would love to know how to fix it- still have the files but can't open them!
Forum: LIVE PLC Questions And Answers December 12th, 2017, 05:01 PM
Replies: 9
Views: 413
Posted By rupej
I agree with Tom above. PID on inlet pressure is...

I agree with Tom above. PID on inlet pressure is probably not the best approach, particularly if the liquid level in the rail car has a greater effect on the pressure than the pump speed.
Forum: LIVE PLC Questions And Answers December 11th, 2017, 02:34 PM
Replies: 13
Views: 276
Posted By rupej
VDC2 needs 24VDC, and COM2 needs the common. Lots...

VDC2 needs 24VDC, and COM2 needs the common. Lots of people leave off the common and the outputs can do strange things, like "stick" on. Take a look and report back.
Forum: LIVE PLC Questions And Answers December 11th, 2017, 01:49 PM
Replies: 13
Views: 276
Posted By rupej
Which outputs on the PLC are staying on? The...

Which outputs on the PLC are staying on? The relay outputs or the transistor outputs? Are all your DC coms for the transistor outputs wired correctly?
Forum: LIVE PLC Questions And Answers December 7th, 2017, 01:23 PM
Replies: 30
Views: 929
Posted By rupej
Looks like the 4004 costs the same or more than...

Looks like the 4004 costs the same or more than the 4007 on digikey- in that case is the 4007 a better choice?
Forum: LIVE PLC Questions And Answers December 5th, 2017, 07:41 AM
Replies: 25
Views: 942
Posted By rupej
Thanks for the explanation- I hadn't thought...

Thanks for the explanation- I hadn't thought about it requiring that extra transition. I'll test it out the next chance I get.
Forum: LIVE PLC Questions And Answers December 4th, 2017, 07:44 PM
Replies: 3
Views: 172
Posted By rupej
Does the HMI have any scripting or logic...

Does the HMI have any scripting or logic abilities?
Forum: LIVE PLC Questions And Answers December 3rd, 2017, 09:15 PM
Replies: 25
Views: 942
Posted By rupej
But I'm talking about holding the start command...

But I'm talking about holding the start command active the entire time you want the drive to run. So even if the drive saw the start and stop bits at the same time for one scan, it would see only the...
Forum: LIVE PLC Questions And Answers December 3rd, 2017, 01:59 PM
Replies: 25
Views: 942
Posted By rupej
Anything wrong with just holding the start...

Anything wrong with just holding the start command active always when you want the drive to run, and then holding stop whenever start is not on? Seems like that would also fix the "no start" issue...
Forum: LIVE PLC Questions And Answers December 1st, 2017, 02:55 PM
Replies: 15
Views: 522
Posted By rupej
No way to monitor the coil that I can think of...

No way to monitor the coil that I can think of other than measuring the mA going to it and using that to trigger a switch.

Really though, if power fails, you won't see the alarm either.
Forum: LIVE PLC Questions And Answers November 20th, 2017, 01:01 PM
Replies: 5
Views: 496
Posted By rupej
I can't answer for certain, but that is about the...

I can't answer for certain, but that is about the variance between logic scans so it may be normal for STI as well.

I was thinking that maybe you can do it a different way- use a "target"...
Forum: LIVE PLC Questions And Answers November 18th, 2017, 09:57 AM
Replies: 2
Views: 262
Posted By rupej
Google "MicroLogix 1200 user manual". Should be...

Google "MicroLogix 1200 user manual". Should be one of the top hits. The wiring diagram is in there. Good luck.
Forum: LIVE PLC Questions And Answers November 18th, 2017, 09:51 AM
Replies: 5
Views: 496
Posted By rupej
Is there a reason you need to calculate the shaft...

Is there a reason you need to calculate the shaft speed every 2ms? Try setting it to 1 sec. Running the calc too often means that the variance between calcs is going to be much greater.

For...
Showing results 1 to 25 of 246

 
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